New energy storeage uses stones
Geoscience at AU is part of the project to store surplus energy from windmills
![](/fileadmin/news_import/Energilager_indvielse.jpg)
The pilot storage unit was inaugurated on March 18th, 2019 by Minister og Education and Research, Tommy Ahlers.
The storage consists of a pile of insulated stones, heated to 600 degrees, powered by the surplus from wind turbines. After a couple of days, when energy is needed again, the heat is passed through a generator which generates electricity and the residual heat is fed to district heating.
Read more:
(In English)
SEAS-NVE, project description: http://energilager.nu/en/the-project/
(In Danish)
SEAS-NVE press release: https://www.seas-nve.dk/koncernen/presse/nyheder-og-pressemeddelelser/2016/PM-Energilager
Ingeniøren: https://ing.dk/artikel/energiselskab-tester-sten-energilager-skala-13000-224762
(Photo by Jesper Blæsild)